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AC/DC & DC/DC converters (integrated FET)

TPS544C20

ACTIVE

4.5-V to 18-V, 30-A synchronous SWIFT™ buck converter with PMBus programmability and monitoring

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Data sheet

TPS544C20

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 30 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 1000 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Over Current Protection, PMBus, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Telemetry, UVLO adjustable, Voltage Margining Control mode D-CAP, D-CAP2 Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 8000 Duty cycle (max) (%) 80
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 30 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 1000 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Over Current Protection, PMBus, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Telemetry, UVLO adjustable, Voltage Margining Control mode D-CAP, D-CAP2 Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 8000 Duty cycle (max) (%) 80
LQFN-CLIP (RVF) 40 35 mm² 7 x 5
  • PMBus-Enabled Converters: 20 A, 30 A
  • 4.5-V to 18-V input, 0.6-V to 5.5-V Output
  • 5 mm × 7 mm LQFN Package with 0.5-mm Pitch
  • Single Thermal Pad
  • Integrated 4.5-mΩ and 2.0-mΩ Stacked NexFET™ Power Stage
  • 600-mV, 0.5% Reference
  • Lossless, Low-Side MOSFET Current Sensing
  • Selectable D-CAP™ and D-CAP2™ Mode Control
  • Differential Remote Sensing
  • Monotonic Start-Up into Pre-Biased Output
  • Output Voltage Margin and Trim
  • Output Voltage and Output Current Reporting
  • External Temperature Monitoring with 2N3904
  • Programmable via PMBus
    • Overcurrent Protection
    • UVLO, Soft-Start
    • PGOOD, OV, UV, OT Levels
    • Fault Responses
    • Turn-On and Turn-Off Delays
  • Thermal Shutdown
  • Pin Compatible 20-A, 30-A Converters
  • PMBus-Enabled Converters: 20 A, 30 A
  • 4.5-V to 18-V input, 0.6-V to 5.5-V Output
  • 5 mm × 7 mm LQFN Package with 0.5-mm Pitch
  • Single Thermal Pad
  • Integrated 4.5-mΩ and 2.0-mΩ Stacked NexFET™ Power Stage
  • 600-mV, 0.5% Reference
  • Lossless, Low-Side MOSFET Current Sensing
  • Selectable D-CAP™ and D-CAP2™ Mode Control
  • Differential Remote Sensing
  • Monotonic Start-Up into Pre-Biased Output
  • Output Voltage Margin and Trim
  • Output Voltage and Output Current Reporting
  • External Temperature Monitoring with 2N3904
  • Programmable via PMBus
    • Overcurrent Protection
    • UVLO, Soft-Start
    • PGOOD, OV, UV, OT Levels
    • Fault Responses
    • Turn-On and Turn-Off Delays
  • Thermal Shutdown
  • Pin Compatible 20-A, 30-A Converters

The TPS544B20 and TPS544C20 devices are PMBus compatible, non-isolated DC-DC Integrated FET converters, capable of high-frequency operation and delivering 20-A , or 30-A current output from a 5 mm × 7 mm package, enabling high-power density and fast transient performance with minimal PCB area. The PMBus interface provides for converter configuration as well as monitoring of key parameters including output voltage, current and an optional external temperature. High-frequency, low-loss switching, provided by an integrated NexFET power stage and optimized drivers, allows for very high-density power solutions and reduced inductor and filter capacitor sizes. Response to fault conditions can be set to either restart or latch off depending on system requirements.

The TPS544B20 and TPS544C20 devices are PMBus compatible, non-isolated DC-DC Integrated FET converters, capable of high-frequency operation and delivering 20-A , or 30-A current output from a 5 mm × 7 mm package, enabling high-power density and fast transient performance with minimal PCB area. The PMBus interface provides for converter configuration as well as monitoring of key parameters including output voltage, current and an optional external temperature. High-frequency, low-loss switching, provided by an integrated NexFET power stage and optimized drivers, allows for very high-density power solutions and reduced inductor and filter capacitor sizes. Response to fault conditions can be set to either restart or latch off depending on system requirements.
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Technical documentation

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Type Title Date
* Data sheet TPS544x20 4.5-V to 18-V, 20-A, and 30-A SWIFT Synchronous Buck Converters with PMBus datasheet (Rev. B) PDF | HTML 29 Apr 2016
EVM User's guide TPS544x20 Step-Down Converter Evaluation Module User's Guide (Rev. B) PDF | HTML 27 Aug 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Application note Programming the NVM of PMBus Buck Converters to Support Mass-Production Needs (Rev. B) 13 May 2019
Application note Practical Tips to Get Accurate Readouts 12 Jun 2018
Technical article Getting started with PMBus PDF | HTML 14 Sep 2017
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC 22 Feb 2016
Product overview TPS544B20 and TPS544C20 Quick Reference Guide 09 Nov 2015
Technical article Select the correct PMBus POL solution for your application PDF | HTML 03 Aug 2015
Application note Not All Jitter Is Created Equal (Rev. A) 04 Jul 2015
Technical article Control your power device with PMBus™ PDF | HTML 12 Jun 2015
Technical article How to tighten PMBus output current measurement accuracy PDF | HTML 05 Jun 2015
Application note D-CAP(TM) Mode With All-Ceramic Output Capacitor Application 03 Feb 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS544B20EVM-634 — 20A D-CAP/D-CAP2 SWIFT™ Converter with PMBus™ and V, I, Temp Telemetry

The TPS544B20EVM-634 is designed to help the user easily evaluate and test the operation and functionality of the TPS544B20 buck converter. The EVM converts a 4.5-V to 18-V input voltage to a regulated 1.0-V output voltage that delivers up to 20 A in a 5-mm x7-mm QFN package. The output voltage on (...)

User guide: PDF | HTML
Not available on TI.com
Application software & framework

FUSION_DIGITAL_POWER_DESIGNER — Digital Power Software

Fusion Digital Power™ graphical user interface (GUI) software is used to configure and monitor select Texas Instruments digital power controllers and sequencer/health monitors. The application uses the PMBus protocol to communicate with the device over serial bus by way of a TI USB adapter.
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Driver or library

MSP-PMBUS — PMBus Software Library for MSP MCUs

The MSP Power Management Bus (PMBus) embedded software library is a free C library for enabling PMBus master implementation on MSP microcontrollers that have eUSCI/USCI serial communication peripherals. In addition, the library supports alert response (for host notification in the presence of (...)

Supported products & hardware

Supported products & hardware

Products
MSP430 microcontrollers
MSP430FR2532 — Capacitive Touch MCU with 8 touch IO (8 sensors), 8KB FRAM, 1KB SRAM, 15 IO, 10-bit ADC MSP430FR2533 — Capacitive Touch MCU with 16 touch IO (24 sensors), 16KB FRAM, 2KB SRAM, 19 IO, 10-bit ADC MSP430FR2632 — Capacitive touch MCU with 8 touch IO (16 sensors), 8KB FRAM, 2KB SRAM, 15 IO, 10-bit ADC MSP430FR5962 — 16-MHz MCU with 128-KB FRAM, 8-KB SRAM, low-energy accelerator, AES, 12-bit ADC, DMA and 76 IO MSP430FR5964 — 16 MHz MCU with 256KB FRAM, 8KB SRAM, AES, 12-bit ADC , comparator, DMA, UART/SPI/I2C, timer MSP430FR5969-SP — Radiation Hardened Mixed-Signal Microcontroller MSP430FR5989-EP — 16 MHz ULP microcontroller reaturing 128 KB FRAM, 2 KB SRAM, 48 IO, ADC12, Scan IF, AES MSP430FR5992 — 16-MHz MCU with 128-KB Flash, 8-KB SRAM, 12-bit ADC, comparator, I2C/SPI/UART, HW multiplier MSP430FR59941 — 16 MHz MCU with 256KB FRAM, 8KB SRAM, LEA, AES, 12-bit ADC , comparator, DMA, 68 IO, eUSCI
AC/DC & DC/DC converters (integrated FET)
TPS544C20 — 4.5-V to 18-V, 30-A synchronous SWIFT™ buck converter with PMBus programmability and monitoring
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Driver or library

PMBUSSW-LINUX — Linux Driver for PMBUS

The Linux driver supports PMBus controlled Buck Controllers. The Linux driver supports communication through the PMBus and interfaces with the HWMon framework.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • tps40400
  • tps40422
  • tps544b20
  • tps544b25
  • (...)
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Simulation model

TPS544C20 IBIS MODEL

SLVMBI2.ZIP (19 KB) - IBIS Model
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Simulation model

TPS544C20 PSpice Transient Model (Rev. A)

SLUM420A.ZIP (83 KB) - PSpice Model
Download
Reference designs

PMP10364 — High Density 30W DC-DC PMBus Buck Converter with Inductor Mounted Over Converter Reference Design

This design has inductor over converter to achieve 30 A conversion in 1" by 0.6" (2.5 cm by 1.5 cm) footprint. The DCAP control of the controller provides a high speed control loop which is needed for applications with large rapidly varying loads, such as microprocessors. A high speed dynamic load (...)
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
LQFN-CLIP (RVF) 40 Ultra Librarian
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Ordering & quality

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  • Ongoing reliability monitoring
Information included:
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  • Assembly location

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